Window lock



April 1960 o. L. WROUGHTON 2,931,676

WINDOW LOCK Filed July 30, 1958 INVENTOR.

A 7'7'ORNE Y6.

Oliver L Wmughfon.

United States Patent O This invention relates to a locking device andmore particularly to a lock for attachment to the upper sash of a windowto prevent'or limit movement of the lower 2,931,676 Patented Apr. 5,1960 tion will hold the locking plate from interfering with the lowerwindow sash.

Fig. 7 is a perspective view of the lock shown in locked position withthe lower window sash engaging the stop megiber to limit or preventfurther opening of the lower sas Fig. 8 is a perspective view of amodified form of the locking apparatus with the keeper portion having aside extended to prevent the locking plate from interfering with thelower window sash. v:-

Referring more in detail to the drawings:

1 designates a locking device embodying the features of my inventionshown attached to the upper window sash 2 of a window casing 3, and 4designates the lower sash of the window both sashes being slidable inthe casings as is the usual practice.

sash with respect thereto, and which will allow the lower sash to beraised when the lock is in unlocked position.

It is the principal object of the present invention to provide a devicewhich may be fastened to the side member of a sash of the upper windowwhereby the lower window sash will strike against a portion of suchdevice to prevent or limit raising thereof and when the window isdesired to be opened the locking portion can be moved and the locktransformed to allow passage of the lower sash past the device to openthe window to the fullest extent and the lock will allow free movementof the lower sash at all times the lock is unlocked.

Other objects of the present invention are to provide a body fastened tothe side member of the upper window sash and having a plate or keeperhingedly connected The locking device has a body member 5 having aplurality of openings 6 for securing the same to the window sash 2 byscrews or the like 7. Upper edge 8 of the body is provided with abearing portion 9 for cooperating with bearing portions 10 on a plate orkeeper 11 for receiving a pin 12 for hingedly connecting the keeper 11to the body 5 so that the plate may swing in axial or vertical alignmentwith the body as later described.

The side edge 13 of the body is provided with a bearing portion 14cooperating withbearing portions 15 on one side edge of a locking plate16 hingedly connected to the body by a pin 17 so that the locking platemay swing transversely relative to the body 5. The outer side edge 18 ofthe locking plate has a bracket 19 turned laterally of the body of thelocking plate and is provided thereto and swingable in a verticalposition to allow the I with an opening 20 for a purpose later shown.The lower edge 21 of the locking plate is turned laterally outwardly inthe same direction of the bracket 19 as indicated at 22 and then foldedbackwardly upon itself as designated at 23 forming a stop 24 to preventor limit upward moveglass of. the upper sash when in unlocked position;to

provide means for holding the locking plate in open position to preventinterference with the lower window sash when in open position so that itmay be lowered without contact with the locking device; to provide astop member on the locking plate whereby the upper face of the lowerwindow sash will contact the same to prevent or limit raising of thelower sash when the device is in locking position; to provide thevertically swinging plate or keeper member with a slot engaging over abracket on the locking plate; to provide means for engaging the bracketfor locking the device in window sash stopping position, and to providea device of this character simple and economical to manufacture.

In accomplishing these and other objects of the present invention, Ihave provided improved details of structure, the preferred form of whichis illustrated in the accompanying drawings, wherein:

Fig. 1 is a perspective view of my invention detached from a windowsash.

Fig. 2 is a front view of the device shown in closed position.

Fig. 3 is a cross sectional view taken on a line 3--3, Fig. 2.

Fig. 4 is a cross sectional view taken on a line 4-4, Fig. 2.

Fig. 5 is a cross sectional view taken on a line 5-5, Fig. 6,particularly illustrating the stop mechanism on the locking plate toprevent swinging of the plate to contact the lower sash when the lock isin unlocked position.

Fig. 6 is a perspective view of the lock shown attached to the window inunlocked position so that the stop porment of the lower sash 4 of thewindow as illustrated in Fig. 6 when the device is in locking position.

In operation of a locking device constructed and assembled as describedwith the body 5 attached to the window sash 2 the locking plate 16 maybe rotated on the hinge pin 17 so that it will lie over the body member5 as best illustrated in Fig. 4. The keeper 11 is then turned downwardlyover the locking plate 16 and the keeper is provided with a slot 25 withsaid slot passing over the bracket 19 so that the bracket will extendtherethrough. A lock 26 is provided for engaging in the opening 20 ofthe bracket 19 to hold the locking plate and keeper in assembledrelation and the stop 24 extends outwardly therefrom over the top 27 ofthe lower window sash as illustrated in Fig. 7. The locking plate issubstantially one-half the width of the body and plate 11 so that thebracket 19 will be in alignment with slot 25 in plate 11. The body 5 isplaced on the upper window sash in any desired position depending on thedesired height the lower sash 4 is to be moved upwardly relat-ive to theupper sash.

When it is desired to raise the lower sash past the locking memberupwardly an unlimited amount, the lock 26 which may be of any size, suchas Yale or the like, is removed from the bracket 19, the keeper 11rotated and swung upwardly in axial alignment with the body 5, thelocking plate 16 is then turned transversely to the body 5 so that itwill extend outwardly in alignment therewith out of the way of the lowerwindow sash so that it may move freely upwardly the desired distance.

In order to prevent accidental rotation of the locking plate so that itwill not interfere with the lower sash when an unlocked position isdesired, I provide the upper bearing portion 15 on the locking platewith a lug 29 extending outwardly from the bearing portion so that whenflat against the body 5, the lug 29 will pass through the I cut-outportion 28 of the body and then extend out wardly as shown in Fig. 2.When the locking device is in open position the keeper 11 may be rotatedto lie flat against the body portion 5 and the lug 29 will engageagainst the side edge 30 of the keeper as indicated at 31, Fig. 5, toact as a stop and to prevent the locking plate from swinging into thepath of the lower window sash 4 when it is desired to raise or lower thesame.

In the form of the invention shown in Fig. 8, the plate or keeper 11 hasits side edge 32 extended to form a stop portion 33 for the lockingplate 16 when the device is in an unlocked position. With this form ofinvention when the keeper is removed from over the locking plate and thelocking plate extended in alignment with the body 5 as shown in Fig. 8,the keeper 11 is then rotated on its hinge to lie fiat over the bodyportion and locking plate so that the stop or extended portion 33 willprevent further outward turning of the locking plate 16 so that it willbe prevented from interfering with the top portion 27 of the lower sash4 when the lower sash is being moved upwardly and downwardly when thelock is in unlocked position.

It will be obvious from the foregoing that I provide an improved windowlock and particularly one to act as a stop for the lower sash so thatthe window may be raised to allow air to enter the room but still lockthe window against further opening and prevent burglary or other entriesthrough the window, and I have further provided a device that will notinterfere with the lower sash when it is in-an unlocked position. WhileI havehere shown :1 lug 29 on the upper bearing portion of the lockingplate 16 as merely being welded thereto, other means of forming the lugon plate 16 may be utilized without departing from the spirit of myinvention.

My device may be utilized for use with movable objects other than windowsashes, the foregoing merely being by way of illustration and notlimitation.

What I claim and desire to secure by Letters Patent is:

l. A device for limiting upward movement of a lower sash of a windowcomprising, a body having an upper edge and a side edge, a locking platehingedly connected to said side edge for engaging over said body when inlocking position, a keeper hingedly connected to the upper edge of saidbody for engaging over the locking plate, said keeper having a slottherein, a bracket on said locking plate for engaging through saidopening in said keeper, means for retaining said keeper in engagementwith said locking plate and stop means on said locking plate forengaging said lower window sash.

2,931,676. I i r 2. The device as specified in claim 1 in which thelocking plate includes means cooperating with said keeper to hold thelocking plate in alignment with the body when the keeper is in unlockedposition.

3. A device for limiting movement of the lower sash of a window withrespect to the upper sash having a side member comprising, a body havingupper, lower and side edges, means for securing the body to the sidemember of the upper sash in spaced relation to the lower sash, a platemember hingedly secured to one edge of the body for swinging in axialalignment therewith, said plate member having a slot in verticalalignment with said body, a stop plate hingedly connected to one sideedge of said body, said stop plate having a bracket on one side edge forextending through the slot in said plate, stop means on the lower edgeof said stop plate for engaging the lower sash to limit upward movementof said sash, and means engaging said bracket on the stop plate to .holdthe plate and stop plate inv folded position with the stop meansextending outwardly over the lowerfsash.

4. The device as specified in claim 3 in which the locking plateincludes means cooperating with said keeper to hold the locking plate inalignment with the body when the keeper is in unlocked position.

5. A device for limiting upward movement of a lower sash of a windowcomprising, a body having an upper edge and a side edge, a locking platehingedly connected to said side edge, a keeper hingedly connected to theupper edge of said body for engaging over the locking plate to hold thesame in locking position, stop means on said locking plate for engagingsaid lower window sash; and means on the locking plate cooperatingwithxsaid keeper to hold the locking plate in alignment with the bodywhen the keeper is in unlocked position.

6. A device for limiting upward movement of a lower sash of a windowcomprising, a body having an upper edge and a side edge, a locking platehingedly connected to said side edge, a keeper hingedly connected to theupper edge of said body for engaging over the locking plate, means onthe locking plate cooperating with the keeper to hold the plate inlocking position, stop means on said locking plate for engaging saidlower window sash, and means on the locking plate cooperating with saidkeeper to hold the locking plate in alignment with the body when thekeeper is in unlocked position.

Gillen May 23, 1916 Burhenne June 4, 1929

